Cursing Allah Ta’ala (Naudhubillah)

Q: I should not be saying this but it is bothering me. When something bad happens to me I lose my temper and say very very bad things about Allah Ta’ala like he is not merciful, he is cruel, and I also curse Allah (Naudhubillah). Do I become a Kafir on saying this? Are all my good deeds wasted by saying this? If I don’t become a kafir, can I repent for these sayings?

A: These are extremely severe statements which takes one out of the fold of Islam. You should repeat the kalimah and renew your nikaah. Express remorse over your actions and make abundant istighfaar and taubah. Make a firm resolve that you will not repeat this in the future.